Traditional staffing models rely on the productivity metric of hours per patient day, lacking the ability to adequately capture the nursing workload. Acuity-based staffing considers the patient population's acuity for appropriate nursing workload. Using process improvement methodology, a pediatric ICU transitioned to an acuity-based staffing model resulting in an 11.3% ( P < 0.05) reduction in the acuity per nursing assignment and a decrease in reportable safety events by 61.3% ( P < 0.05).